LayoutKit

Open LayoutKit and make a + New project

Give that project a name e.g REDO

select Firmware Version and choose 14.0.0

then select All Apps

finally click the Create button on the bottom

Click on Apply JSON and locate layout.json you extracted from the .nxtheme file

Now Repeat the step above and apply offset-allappsfix (All Apps).json

Now Click on Save JSON and save the new json